/**
 * This plug-in will provide numeric sorting for numeric columns which have
 * extra formatting, such as thousands separators, currency symbols or any other
 * non-numeric data.
 * 
 * By default when a cell is found to have no numeric data its value is sorted
 * numerically as if its value were 0. This could also be altered to be Inifnity
 * or -Infinity as required.
 * 
 * DataTables 1.10+ has formatted number detection and sorting abilities built-
 * in. As such this plug-in is marked as deprecated, but might be useful when
 * working with old versions of DataTables.
 * 
 * @name Formatted numbers
 * @summary Sort numbers which are displayed with thousand separators
 * @deprecated
 * @author [Allan Jardine](http://sprymedia.co.uk)
 * 
 * @example $('#example').dataTable( { columnDefs: [ { type: 'formatted-num',
 *          targets: 0 } ] } );
 */

jQuery.extend(jQuery.fn.dataTableExt.oSort, {
	"formatted-num-pre" : function(a) {
		a = (a === "-" || a === "") ? 0 : a.replace(/[^\d\-\.]/g, "");
		return parseFloat(a);
	},

	"formatted-num-asc" : function(a, b) {
		return a - b;
	},

	"formatted-num-desc" : function(a, b) {
		return b - a;
	}
});
